Shannen Doherty continues to honor the team that is helping her slay breast cancer, as she moves onto the next phase of her treatment regimen.

The 45-year-old Beverly Hills, 90210 and Charmed alum was diagnosed with the disease in 2015 and has documented her battle on Instagram. She has undergone a single mastectomy, chemotherapy and most recently completed radiation therapy, marking the last of her most grueling cancer treatments.

Doherty posted on Instagram Friday a photo of herself, her Beverly Hills-based radiation oncologist and two medical staff members standing in front of a radiation therapy machine nicknamed Maggie.

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"Thank you Vantage Oncology and Dr Leslie Botnick," Doherty wrote. "Thank you to all that work there, especially Anna, Vince, Mike (pictured here) and Jackie."

"And a big thank you to Maggie," she added. "Everyday you rotated around me, I knew you were zapping the last of those pesky micro cells lingering behind. Here's hoping I never see you again sweet Maggie!!! #lovethiscrew #cancerslayer"

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After completing her radiation therapy, Doherty headed to get her gray hair dyed brown. It has started to grow back after she finished chemo.

"What do you do to celebrate end of radiation? You run to @ramireztransalon and see @johnnyramirez1 to transform your hair color (let him do whatever he wants cause he's that good and that lovely) and then sit with @anhcotran for the best haircut and just to revel in his pure radiance," she wrote. "Love these two. #cancerslayer with good hair now!!!"

"This is Maggie," she wrote, alongside a photo of herself posing playfully next to the radiation therapy machine. "I've seen Maggie five days a week for what seems like forever. We have a love hate relationship. I love her because she's part of the life saving treatment I'm receiving. It's astounding how far we have come with technology. One day, Maggie will be retired and the cure will be found."

"Things like immunotherapy are the future but for now.... it's me and Maggie," Doherty said. "I'm seeing her twice tomorrow so that I can wrap this phase up faster. Goodnight sweet Maggie. See ya tomorrow. #cancerslayer."

Doherty is now set to take immunotherapy drugs to stimulate her immune system to kill cancer cells. Such medications can also bring side effects, although they are typically not as harsh as the ones patients tend to suffer while undergoing chemotherapy or radiation.

In addition to dealing with physical effects of her cancer treatments, Doherty has also had to deal with the different reactions from the public. She had last month shared a sad story about how a "random girl" seemed "horrified" to share an elevator with her after she had gotten a radiation treatment.

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Despite the grueling treatments, which have zapped her energy, Doherty has tried to keep fit and active during the process. She has posted videos of herself working out by dancing.

"I believe that just moving helps so much in the healing process," she wrote last October. "It's not always easy and sometimes I can't do it the next day but I try to make an effort to get the blood flowing and the toxins out of my body thru working out."

Doherty posted on Instagram Thursday a video of her dancing with her trainer, Neda.

"Went from morning radiation to dance with Neda @jammalibu," she wrote. "Now shower then back into town for second radiation. Had to move to stay motivated!!! @sarahmgellar get ready... you're up!! #cancerslayer and #slayer."

"@theshando amazes me each and everyday. #the queen #cancerslayer," Neda wrote. "It's been rough with radiation but she still comes in to her workouts with her head up high and says 'give it to me' lol and trust me I do!"

"This is her after radiation doing repetitive dance intervals at a very high intensity!" she said. "After this workout she goes back for another session of radiation. #noexcuses and she never feels sorry for herself. #myhero #shannendoherty #fightlikeagirl #homestretch #onelove ♥#oldschool #whoopthereitis #gangsterrap."

A photo posted by ShannenDoherty (@theshando) on Oct 19, 2016 at 2:19pm PDT

Sarah Michelle Gellar and other celebs have expressed their support for Doherty publicly amid her cancer battle.

"From one slayer to another- 'the hardest thing in the world is to live in it' thank you S for showing us all how to live," the Buffy the Vampire Slayer alum wrote on Instagram in response to Doherty's post, which she reposted. "I want an invite to dance and celebrate with you please."